device-dax: make dax_bus_type const

rbmarliere · davejiang · commit bc22374c96d9 · 2024-02-12T15:10:21.000-07:00
Now that the driver core can properly handle constant struct bus_type, move the dax_bus_type variable to be a constant structure as well, placing it into read-only memory which can not be modified at runtime. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20240204-bus_cleanup-dax-v1-1-69a6e4a8553b@marliere.net Signed-off-by: Dave Jiang <dave.jiang@intel.com>
diff --git a/drivers/dax/bus.c b/drivers/dax/bus.c
@@ -222,7 +222,7 @@ static void dax_bus_remove(struct device *dev)
 		dax_drv->remove(dev_dax);
 }
 
-static struct bus_type dax_bus_type = {
+static const struct bus_type dax_bus_type = {
 	.name = "dax",
 	.uevent = dax_bus_uevent,
 	.match = dax_bus_match,

Original file line number	Diff line number	Diff line change
`@@ -222,7 +222,7 @@ static void dax_bus_remove(struct device *dev)`
`222`	`222`	`dax_drv->remove(dev_dax);`
`223`	`223`	`}`
`224`	`224`
`225`		`-static struct bus_type dax_bus_type = {`
	`225`	`+static const struct bus_type dax_bus_type = {`
`226`	`226`	`.name = "dax",`
`227`	`227`	`.uevent = dax_bus_uevent,`
`228`	`228`	`.match = dax_bus_match,`